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Joint Photographic Experts Group Image  |  2001-05-31  |  16.3 KB  |  480x390  |  8-bit (256 colors)
   ocr: CH,NH2 - - - - - HONE - HO- H2N NH2 HOCH2 f O - HO *X H2SO4 OH NH2 HO- - - - - - - R . . R1 HO- Neomycin B (R1=H, R2=CH2NH2) Neomycin C (R1=CH2NH2, R2=H)